Class: Tui::InputField

Inherits:
Object
  • Object
show all
Defined in:
lib/tui.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(placeholder:, text:, cursor: nil) ⇒ InputField

Returns a new instance of InputField.



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# File 'lib/tui.rb', line 808

def initialize(placeholder:, text:, cursor: nil)
  @placeholder = placeholder
  @text = text.to_s.dup
  @cursor = cursor.nil? ? @text.length : [[cursor, 0].max, @text.length].min
end

Instance Attribute Details

#cursor ⇒ Object

Returns the value of attribute cursor.



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# File 'lib/tui.rb', line 805

def cursor
  @cursor
end

#placeholder ⇒ Object (readonly)

Returns the value of attribute placeholder.



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# File 'lib/tui.rb', line 806

def placeholder
  @placeholder
end

#text ⇒ Object

Returns the value of attribute text.



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# File 'lib/tui.rb', line 805

def text
  @text
end

Instance Method Details

#to_s ⇒ Object 



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# File 'lib/tui.rb', line 814

def to_s
  return render_placeholder if text.empty?

  before = text[0...cursor]
  cursor_char = text[cursor] || ' '
  after = cursor < text.length ? text[(cursor + 1)..] : ""

  buf = String.new
  buf << before
  buf << Palette::INPUT_CURSOR_ON if Tui.colors_enabled?
  buf << cursor_char
  buf << Palette::INPUT_CURSOR_OFF if Tui.colors_enabled?
  buf << after
  buf
end